Apparatus for assembling stiffeners in shoe uppers



Sept, 11, 19211 1,684,052

. W. H. BAYNARD APPARAT'US FORIASSEMBLING STIFFENERS IN SHOE .UPPERSFiled March 13, 1924 gapen-?? @Zig/22er@ www@ vformed of fibrous ysheetPatented Sept. 1l, 1928.

UNTED STATES WILLIAM H. BAYNARD,

PATENT OFFICE. r

BECKWITH, OF BROOKLNE, MASSACHUSETTS.

APPARATUS ron Appncaaon meanarch 13, 1924t semi No.

This invention relates to apparatus for use in assembling stiffeners inshoe uppers according to the method set forth in my application forpatent Serial Number 619,555, tiled February 17, 1923, for method forassembling stiffeners in shoe uppers and the article produced thereby,this application being in part a continuation thereof and relating to amodified construction of the apparatus. Y

llrieiiy the method comprises locallyheating a portion of the surface ofa' stiffener material saturated with a thermoplastic, so as' to causethe thermoplastic to exude, and while the exuded material is still tackyto a.;semble the stiffener in the upper and pressV the parts together.his causes the exuded material to partly penetrate the ,fabric portionsof the upper between which the stiffener is positioned so that when thismaterial sets it binds the parts securely together.

Referring'to the accompanying drawings,

Figure 1 is a top plan of the apparatus. l

Figure 2 is a front elevation thereof.

Figures 3, 4 and 5 are detail cross sections on lines 3-3, 4-4 and 5-#5,respectively, of Figure 1.

Figure 6 is a portion of a shoe upper ener assembled therewith.

Figure 7 is a plan 'of the stit'fener prepared for theassemblingoperation.

The apparatus comprises a platform portion 1 at one end of which ispositioned a vertically movable table 2. This table as cross sectionthrough the toe showingthe stiffshown is supported on the upper ends ofrsprings 3 each` seated in a socket 4 in a support projecting above theupper face o' the platform 1. This table 2 may be pulled downwardlyagainst the tension o the springs 3 until it strikes the upper face ofthe support 5 which acts to limit theextent of its depression by meansof a pull rod G engaging' ears 7 depending from the table, this pull rodpassing through a lever element 3 having a fulcrum end 9 bearing on theunder face of the support 5 and to the other end of which is fixed alink 10 which may be depressed as by means of a suitable treadle (notshown). Rearwardly of the support 5 is a machine base 11 having a pairof spaced upstanding bearing portions 12 for siidably supporting a pairof spaced guide rods 13 which are held.. in posit-ion by ASSEMBLINGSTEFFENERS INSHOE PPERS.

means of cap bars 14. Fixed to theserods 12 Iis a'carriage 15 which maybe reciprocated between the bearings 12.l

As shown in Figures 1 and 3 the carriage 15 is fixed to the rods l13 bymeans of set screws 16. As shown best in Figure 5 the rear portion ofthe carriage 15 is formed ,of inverted U shape in vcross section withdownwardly extending side flanges 17 spaced at their lower ends to forma guidelway 18 for a roller 19 journaled on a crank boss 2O of a wormwheel 21 (see Figure This worm wheel is journaled on a shaft 22 fixed ina boss 23 on a'horizontal web 24 in y the machine head.v Meshing withthis worm wheel is a worm 25' at the end of a shaft having a bearing inone of the portions 12 which has an extended bearinghub 26 theres on andat the other endv of this shaft Iis positioned the tight and loosevpulleys 27 and 28. By rotation of the worm it is evident `hat the wormwheel 21 may be rotated, thus causing the cam roller19 to pass back andforth 'within the guide slot 13 in the carriage and also to cause thecarriage to reciprocate between the bearing portions 12 parallel to thesurface of the table 2. The carriage 15 is extended over the table 2 asshown at 30 and has journaled in a socket in its lower face a pressureroller 31 against which thetable 2 is pressed by means Yof the springs3. To the forward face ofthe support 4 is fixed, as by means of an anglebracket 33, a platform"34,the upper face of lwhich is on a level withthe upper face of the table 2 when this table is depressed to its lowerlimitvof motion in engagement wtli the support 4. The vpressure rollerthus moves in a' horizontal plane only and at a fixed distance above thelevel of the platform 34.l

The platform 1 also carries a hot plate indicated at 3 This hot platecomprises a U shaped metal trough 36 having a flat plate 37 bridging itsupper edges to form a closed tubular heating chamber. rVithin thistubular chamber is positioned an electric heating unit 33 of anysuitable description, while along its forward edge is-i'ixed, as Ybymeans of an angle bracket 39, a tubular'support 40. The plate 37 ismaintained at a high temperature by means of the electric heating unitso that a toe stiifener of the form shown at in Figure 7 may be placedon the supporting rod.. 40 with its shire@ rear margin 46, in conf tactwith the hot plate 37. rllhis causes the thermoplastic material withwhich the blank l5 is saturated to try out or exude at the surface oi'the skived portion as indicated in Figure 7. `While this material isstill warm and tacky the blank is inserted as shown in Figure 6 inproper position in the assembled upper, in this ligure t7 indicating thevamp, 48 the vamp doubler and i9 the lining. This may be done while theshoe upper is heldin position on the platform 34 as shown in dottedlines in Figure l. The treadle is then depressed to depress the table 2and the shoe is moved backwardly beneath the roller 31. rlhe table isthen allowed to rise to press the upper against the roller, and, as thisroller is caused to move back and forth over the table 2 by thereeiprocation ot the earriage l5, the shoe parts are rolled ,into int"-mate Contact so that the exuded. thei'inoplastic material lis caused topenetrate the adjacent portions of the upper and adhere thereto.

Where a doubler is employed, as shown in Figure 3, the stiitener isbetween two it'abric layers, while-where the doubler is not employed,the stiliener engages on one side with the shoe lining and on the otherside with the comparatively rough and soft face of the vamp leather withwhich itmay lii'inly imite. l hen the parts have been thus iirmlypressed together the table 2 is again depressed and the upper removedtherefrom.

Having thus described an embodiment ot' this invention it should beevident to those skilled in the art that various changes andmodifications may be made therein without departing from its spirit orscope as defined by the appended claims.

claim: y Y

l.v An apparatus of the class described comprising a vertically movabletable, means normally7 holding said -table elevated, means 'fordepressing` said table, a stationary plat-v form adjacent to said tableat the level of its depressed position, and a pressure member above saidtable at a tiXed distance from the level ot said platform andCooperating with said table to press material therebetween when saidtable .is in elevated position.

2. An apparatus of the class described comprising a vertically movabletable, means normally holding said. table elevated, means for depressingsaid table, a stationary plattform adjacent to said table at the levelot its depressed position, a pressure member above said table andeooperat'ng therewith to press material therebetween when said table isin elevated position, and means to reciprocate said pressure memberparallel to said plat-- form.

comprising a table, a pair oiC parallel rods arranged adjacent to saidtable with eapability ot axial i'eciproration, a carnage lixed to saidrods and extending over said table, a crank pin engaging a guideway insaid carriage laterally of said rods, means for rotating said crank pinto reciprocate said larriage, a roller earr'ed by said carriage oversaid table, and means to resilientlyurge said roller and table togetherto cause said roller to said table.

4t. An apparatus end projecting over said table, means atene side ofsaid table for guiding said carriage for reciprocatory movement, aroller carried* end ot said carriage tor engaging by said Y Y work onsaid table, a worm wheel adjacent t0 said guiding means, a crank pincarriedby said worin wheel and engaging within Y a gnidewaylongitudinallyof such carriage, a worm engaging said'worm wheel, andmeans for driving said wormy 5. An apparatus ot the class describedcomprising a vertically movable table, resilient means normally holdingsaid table elevated, means for depressingsaid table, means for limitingthe extent of such depression, a platform having its upper face levelwith the top of said table when in'its depressed position, and aVpresser member movable above saidtable at a fixed distance above saidplatform and against which work on said table held when said table iselevated.

In testimony whereof I have atliXed my signature. f

WILLIAM i-i` BAYNARD.

An apliaratus of the yclass describedr pressagainst work supported on ofthe class describedy con'iprising al table, a carriage `having oneV

